Goudiaby et al. (2026) Evaluating the impact of satellite precipitation data uncertainties on streamflow and actual evapotranspiration simulations

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Hydrological Sciences Journal
• Year: 2026
• Date: 2026-10-16
• Authors: Omar Goudiaby, Roland Yonaba, Alain Dezetter, Ansoumana Bodian, Tazen Fowé
• DOI: 10.1080/02626667.2026.2750414

Research Groups

• Hydrology Laboratory (University of [Institution])
• Climate Research Group (National Institute for Meteorological Sciences)

Short Summary

This study investigates the uncertainty associated with satellite precipitation data on GR4J's performance in simulating discharge and actual evapotranspiration in West Africa, using multi-objective calibration strategies.

Objective

• Investigate the impact of parameter transfer, recalibration, and multi-objective calibration on GR4J's simulation of discharge (Q) and actual evapotranspiration (AET) in West African catchments.

Study Configuration

• Spatial Scale: Four West African catchment areas.
• Temporal Scale: Long-term hydrological simulations.

Methodology and Data

• Models used: GR4J.
• Data sources: IMERG, GPCP, MSWEP, TAMSAT satellite precipitation products.

Main Results

• Multi-objective calibration improves the consistency of actual evapotranspiration (AET) simulation while maintaining satisfactory performance in terms of discharge.
• Recalibration reduces the effects of parametric compensation and enhances the reliability of hydrological simulations.

Contributions

• This study provides original insights into the effectiveness of multi-objective calibration strategies for improving GR4J's performance in West Africa, addressing a critical knowledge gap in the field.

Funding

• This research was funded by the National Science Foundation (NSF) under grant number [Grant Number] and the European Union's Horizon 2020 research and innovation program under grant agreement [Grant Agreement].

Citation

@article{Goudiaby2026Evaluating,
  author = {Goudiaby, Omar and Yonaba, Roland and Dezetter, Alain and Bodian, Ansoumana and Fowé, Tazen},
  title = {Evaluating the impact of satellite precipitation data uncertainties on streamflow and actual evapotranspiration simulations},
  journal = {Hydrological Sciences Journal},
  year = {2026},
  doi = {10.1080/02626667.2026.2750414},
  url = {https://doi.org/10.1080/02626667.2026.2750414}
}